sony xperia u wifi problem

[MishaMike]

I'm experiencing wifi & internet connection problem on my xperia u. I've factory reset my phone after that i tried to connect via wifi the unit detected the wifi but it faied to connect.i also checked the phone settings. Is there someone who can help??

[Alexander1]

Are you sure that you put in the right password? Try to forget the network and reconnect to the network. 

Have you tried to connect to a different Wi-Fi access point? 

Take a look at the following thread: 

http://talk.sonymobile.com/t5/FAQ/Wi-Fi-problems/m-p/348104#U348104

Hopefully you'll find your your solution there.